I have done a couple of different things in terms of clear coats... on the SFG Duo Sonic, I went with the better part of three cans of ReRanch clear nitro. I sprayed three passes per coat but usually four coats per day. My passes and coats were pretty misty at first, and gradually heavier as the lacquer started to build up. I gave it at least an hour between coats, usually 2-3. It was warm here, but not ridiculously hot (70-90 degrees), and the humidity was on the low side - 35-40%, so things tended to dry fairly fast.
If you're expecting your clear coats to look really glossy and shiny as you're spraying them, you may be disappointed. It will get glossier as you get more coats on, but the full gloss comes as a result of the final sanding and polishing. The main reason for lots of clear coats is partially for gloss, but mainly for sand through protection. I'd say if you have two cans of clear on, you're probably safe... but three may be safer. Four is probably overkill. If you're at five CANS, you probably have enough clear on there now.
Give it a LOT of time to dry. Seriously - with that many clear coats, I'd suggest a MINIMUM of two weeks, and a month would definitely be better. Extend those times 50% if the temps are cold and / or the humidity is high.
Again, the REAL SHINE will come in only at the END of the sanding process. What little gloss you can see now will quickly disappear as you start to sand with 600 grit paper. You WANT to get it to look fully dull, with no "shiny spots" left as you sand. Once you have it even, then move on to the next finer grit (800) paper. The idea is to get rid of the sanding marks from the previous paper with the new, finer grit paper. I'd recommend wet sanding (with a few drops of dish soap liquid in the water for lubrication), and even though you can no longer see the grain, sand "with the grain". Keep working your way up through the finer and finer grades of paper - get up to at LEAST 1200 grit; 1500 or 2000 is better, but Finesse It will buff out any remaining fine scratches from 1200 grit or finer paper. YOU WILL NOT SEE A SHINE coming back at you until at least 1000 grit, and even then, the real shine won't happen until you get to that buffing stage. Finesse It works great BTW.