I know this is a wide open question as opinion plays as much of a part in the decision as do the facts/numbers.
What I have: 95" SERG with the 203's. SE air cleaner, Bassani slip on's, Power commander.
What I have on the shelf: Ported heads, SE roller rockers, SE adjustable push rods, gasket set.
A little history. The ported heads were on my B motor in my softail. With a set of TW60's, a SE Pro Pipe, SE 44 mm CV, SE Intake, and low comp (10:1) cast pistons. The bike made 105 hp and 105 tq. This was not it's best numbers as far as peak, this was the best power curve.
So I know the heads will flow a little bit of air. Now what I'm after is some cam choices. This is more of a highway bike than a around town bike. I can either keep the OEM pistons Harley sent through or replace them with something with a tad bit more compression. The cams can either be standard or geared. I have no preference.
My current setup is netting me 82.8 HP and 94 TQ. Ultimately I'd like to see 1-tens to 1-teens on both HP and TQ.