One more. You *might* consider visiting these folks over near 145 and Beltway 8
Best Preowned RV Used class A Diesel Motorhomes in Houston, Texas
I bought my previous DP from them, they were very fair on the price, and actually nice to work with - however - they did send me off with a unit that had some obvious issues that I felt they knew about, or at least noticed - but I think this could happen from just about any dealer...
regardless, the unit they sold me got me some 25k odd miles before I downsized.
Based on my previous experience, I would recommend you keep as much money in your pocket as is feasible while still accomplishing your goal. Keeping back 20 to 40k of your budget as backup allows you the ability to apply fixes and changes as needed.