Proof is in the pudding on the offset pad, Randy. You might not mind too much right now, if you can't return them. Hopefully you can. Its definitely not ideal. I have pretty much those exact pad and spurs. Most people would hate them, I think they are sweet, and I got them for $41 shipped in 2006, and they are still going. Bigger guys are more likely going to need more padding. I'm typically about 180-185#.
Regarding being able to physically do it...FWIW, Double Line Rope Walker!!! Leg power...well, leg power and arm power. For an extra $150 or less, you can get the rope walker ascenders and fashion a teather A chest harness with a biner or micropulley, might help as well for the more top-heavy people.
Spur and flipline without a high TIP is LOTS more work. I've gotten to where I hang on my rope much more than I stand on my spurs during the course of a removal if there is cut and clean-up going on, in concert. I used to use a choked TIP below my flipline, and relied on strength and stamina to go,go,go. Then, as I got better at removals, and was more efficient, I'd climb back down a couple steps to hang on my climb line while waiting, then back up. As time progressed, and I got better at advancing my climbline overhead with accuracy (a steel biner and weight on the end can get your rope up a good ways), I would get TIPs somewhat overhead, and hang whenever I wasn't using my spurs for upward movement (really, sharing the weight a bit on the spurs, and using them for positioning). My spurs don't have to be super plush or light, and importantly, they work for me, and you have to find what works for you. Also, with an overhead TIP, its easier to rely on pole gaffs, which torque your knees less, and are more stable in small wood, IME.