Stay away from the JJR hubs! They break! I wouldnt touch them with a 10ft pole...and you want to run semis on them! NO WAY!!
It depends how picky you want to be with rims...there are plenty of 4 stud rims around in decent widths and offsets. GMAX, Koya etc etc.
IMO its easier to go 5 stud and then throw on some GTR offset rims ie 32,3 GTR wheels which are plentiful.
You need:
S14,5 front hubs and knuckles
S14,5,R33 LCAs, OR retain your S13 LCA and fit a S14,5 or R33 ball joint
S14,5,R32,3 rear hub assemblies with handbrake cables, upgrade to drum handbrake while youre at it too, use R32,3 rear discs
Its a fair list but all the parts can be had for way less than 800 if youre cunning about it.
Its all boltup and you can do it yourself, the only thing you need to mod are the coilovers.
Then while youre at it throw in a complete R33 brake system for insane braking power.