Also a big point to take note of in brewing balanced hoppy beers is that you need to chill them quickly after the heat is switched off (0 minutes). If you take a long while to get the heat down, the hops lose their aroma and make a more firmly bitter beer, which is probably not desirable. I have tasted a few 'noob' beers that have been surprisingly bitter and un-aromatic.
This is largely due to the fact that some of the wonderful hops you can use for great APA aroma aroma (eg Centennial, Amarillo or whatever) have high alpha acids (bitterness) as well as being high in oils, which provide the aroma. You want to get the hops hot to release everything, and then cold pretty quickly so that the oils stick around, and the alpha acids are not isommerised more than desired. So, if you plan on a 5 minute aroma addition, you want it to get the boiled wort as cold as possible, as quick as possible after the 0 minute mark.
It is my opinion that if you can't organise to chill adequately, then you might be better erring on the side of caution. Add smaller 'flavour' late additions while hot, expecting them to over-isommerise. Leave the aroma side to heavier dry hopping, which is pretty hard to stuff up. I like a big aroma in my beers. Again, my opinion.