Perhaps it might have been wise to keep the 07 HD for the around town rides, and spend the 2K ( including the custom seat you desire) to tweek the B to where you want it. The B is fantastic for touring, though not great here in Southern California for day-to-day / commuting to work. The traffic here is insane and abysmal so 8 months of the year I'll use my '06 custom roadliner to share / split lanes (The B is too large to consistently split lanes for miles ). The raining days I drive the Jeep.
The HD is 30K (taxes prep fees etc. etc.), then add another 4K ish for the accessories you need to make it fit correctly for you? And, after spending all that cash on the HD, what if it doesn't fit correctly? I'm presuming you have the cash for the HD and you're not like most of Americans going into debt to purchase an HD, correct?