The set up looks O.K and it's been done by ABP who are a reputable company.
What I mean is changing the suspension like for like so replace your OEM dampers/springs with OEM (genuine Honda). It'll be the same as your running now just new parts. Over time parts wear so you would just be freshening things up.
I don't think the exhaust would scrape the b pipe does hang lower on aftermarket exhausts but with a 15mm drop it should be O.K. depending on road conditions, size of speed bumps etc. I think if you went for the sport lines which drops it by more then you probably would have trouble.
I plan on doing it in the future, it's on my long list lol. I'd be going for the Bilsteins and the Eibach pro kit as I don't want to go too low so I think this would be the best set up for me.
Suspension and set ups are up to driver preference, you need to find what works for you. In a way it's the same with tyres, some people get on with some and not with others. I had Pirelli P Zero's on a previous car and found them to be *****, aquaplaned with them and crashed (luckily not a bad one and no-one else involved). I also weren't a fan of Conti sport 3's on a different car again. I'm currently running Kumho ecsta KU39's and I'm finding them good for the price they've been faultless so far.
So you need to find what suits you best. Unfortunately sometimes that means you spend more by changing things to find out what works best for you.