I know you said small suv. But I think a small suv and 2 car seats are a bad idea.
2 seats plus the stuff you will need.
I'd look at a minivan or a Tahoe.
I have a cx-5. I'd never want to try 2 car seats in it with any regular use.
I'm not sure a hand held belt sander can do this to the level you would like. I does look good. I have done aluminum cylinder heads, and aluminum oil pump covers on a sand paper attached to a piece of glass. I don't think that would work well with cast iron, might take forever.
The Manual for the Predator 5000 does say every 100 hours.
My Predator 4375 says every 20hrs. I have High Performance Lubricants Premium Plus 0w40 in it. I'm going to go 50 hrs.
Ran it earlier this week, some car accident took down a pole and transformer. Ran it 8 hours.
I buy what i like, not what i think others like. I don't have any really expensive watches, but i would like to get a Longines, Breitling, or a nice Tag Heuer at some point, its not a priority now. I would never wear a fake.
550xp update. The X-force 18 inch bars suck. 2 have failed with the sprocket seizing up, plenty of oil. It does not have a grease port, but neither does the oregon versacut bar i have on there now, and its fine.