In all honesty unless you want some bling, I wouldnt bother with the Gen3s. They are quite a bit of expense for no real gain over decent drop ins. Install wise its not so bad, I think it took me about 3hrs in the end, because I was doing everything slowly. Could be done quicker, but I wouldnt want to rush it, I would leave an afternoon to do the work.
IMO I'd just get drop in filters and put the extra money saved towards a remap. You have a good range of mods there, so you should see good gains from a map. Unless you want some extra under bonnet bling