Given your stated goals, I would want a Hoplite, a Sentinel BUK, and all the toys to outfit either for any specific task (which is just what I intend.) It will be very interesting to see if the Vanguard can fit an S1 and an S2 reactor. If it can, it will be a premium stealth bounty hunter. No matter what weapons, shields, etc. you choose, you should be able to attack with S3 and S4 missiles from outside detection range and immobilize your prey before they can see you.
Until we know more about the EM Warfare I would not presume you will ever need a pulse generator. Missiles and distortion guns should be enough.
Most important though, if you want to take bounties on the ground, I think you want a Hoplite. Half dozen troops is going to be a very handy thing.
If you intend to work as part of a larger team against the hardest bounties, which will likely be flying Polaris, I would suggest you consider the Razor EX. Bounty teams need scouts and the EX is the perfect bird to chase down leads. Stealth Recon rocks. The dash is too high, so you want to fly before you buy to be sure you like it.
I don't think anyone will need to move BUKs and modules. My guess is they'll magically appear at whatever port you're at, same as your cash does, but we will see.