For solo, since you play alone, there is no limitation on path. You can take as many paths as possible since no one will chase you as a team. The risk for going as many paths as possible totally depends on you. Also there are meta builds that takes 6 paths for solo mode as well.
However, if you come to duo/squad, you can't. 5 paths would be maximum unless you are highly skilled. Of course you can take as many as you can, however, you will very likely encounter an enemy team and die by joint attacks. This is because most meta plans take 5 paths and they meet their allies while you still take path 6. If you go 6 path and leave your ally alone then your ally will also very likely be in danger soon even though you are highly skilled. I wouldn't recommend you do 6 paths and not gathering with your ally even after 5 path unless both of you and your teammates are all highly skilled, really highly skilled I mean.
Then, is it better if I take 4 path build, like always?
It depends on the performance of the 4 path build. If you can make items fast and kill fast before others make all items, then use it, especially if you look for meteorite or life of tree early on, you may need it more.
However, most builds as meta plans takes 5 paths and they perform better than 4 path builds (however 4 path build may very likely perform better if it is upgraded by meteorite or tree of life). And there is auto resurrection for first 2 days and in those 2 days, you will very likely obtain all the required items if your build takes 5 paths but not 6 paths. I mean, since you have auto resurrection and time, then you might focus on stronger builds which are more likely 5 path builds.
From my experience in duo/squad, if your ally is a type of player who dies lot anyways in first 2 days, no matter how fast build you made and helped allies quickly, the team will very likely lose at the end anyways (not being top 1 team). So I means you rather want to focus on your play high quality by having quality equipment. Highly skilled players they all know how to survive in first 2 days without your helps.
However, if you come to duo/squad, you can't. 5 paths would be maximum unless you are highly skilled. Of course you can take as many as you can, however, you will very likely encounter an enemy team and die by joint attacks. This is because most meta plans take 5 paths and they meet their allies while you still take path 6. If you go 6 path and leave your ally alone then your ally will also very likely be in danger soon even though you are highly skilled. I wouldn't recommend you do 6 paths and not gathering with your ally even after 5 path unless both of you and your teammates are all highly skilled, really highly skilled I mean.
Then, is it better if I take 4 path build, like always?
It depends on the performance of the 4 path build. If you can make items fast and kill fast before others make all items, then use it, especially if you look for meteorite or life of tree early on, you may need it more.
However, most builds as meta plans takes 5 paths and they perform better than 4 path builds (however 4 path build may very likely perform better if it is upgraded by meteorite or tree of life). And there is auto resurrection for first 2 days and in those 2 days, you will very likely obtain all the required items if your build takes 5 paths but not 6 paths. I mean, since you have auto resurrection and time, then you might focus on stronger builds which are more likely 5 path builds.
From my experience in duo/squad, if your ally is a type of player who dies lot anyways in first 2 days, no matter how fast build you made and helped allies quickly, the team will very likely lose at the end anyways (not being top 1 team). So I means you rather want to focus on your play high quality by having quality equipment. Highly skilled players they all know how to survive in first 2 days without your helps.
Jotaku, Anime Game Gamer
I. Eternal Return NA Immortal Tier
II. Super Mecha Champions NA Legendary Tier
III. Tokyo Ghoul: re Call to Exist NA Top #2
IV. Fate/EXTELLA Link: NA Top #9
V. Senran Kagura PEACH BEACH SPLASH: NA Top #3
I. Eternal Return NA Immortal Tier
II. Super Mecha Champions NA Legendary Tier
III. Tokyo Ghoul: re Call to Exist NA Top #2
IV. Fate/EXTELLA Link: NA Top #9
V. Senran Kagura PEACH BEACH SPLASH: NA Top #3