We have been looking at the Winnebago Journey 36C Diesel .. Years 2000-2003. I have two main questions.. Are there any main issues I should be considering for this model? Also, they tend to have either the 275 or 300 HP Cummins Diesel... would I regret purchasing the 275...? We are looking at this for full time RV'ing meaning we will be all over the U.S.A. traveling including mountains. Worried about enough HP/Torque with the 275 particularly with a Toad.