Congratulations on the motorhome purchase and welcome to the forums. Lots of knowledgeable folks here. Sounds like you've got optimism about getting the unit back up on the road. Good low miles, hopefully no major issues. Not sure of your current issues but watch out for this.
"One of the main faults with the early V10 engines (1999 – 2005) was that the spark plugs could blow out of the cylinder head."
One major issue that plagued the earlier V10 engines. I have a V10 in my MH and is has done good. I do have a 5 Star Tune on mine that helps with pulling hills and shifting. I would run some good fuel through it and some fuel injection cleaner as well.