They don't like it from what I've heard lol if he has crazy rise (probably will in a t-line right?) it might be alright though
Watch those fuse holders OP, they should be fine but I've had one melt on me due to heat buildup. Just once a week or so check it and make sure it's still a clean tight connection
There's a link floating around for some super cheap marine grade fuse holders for like $5-10 a piece and they have some really nice covers as well. Definitely consider it as you tidy up the build.
I'm impressed with your skills though and actual ability to listen to people who give you good advice. Way too many people come on here asking for advice without actually listening to it
Edit: here we go, mmm glass fiber reinforced nylon goodness. that's the stuff
https://www.vtewarehouse.com/content/electromech/fuse/html/anl/anlfuse.php