Gentlemen! Thank you all for your feedback! The OP is a master of confusion people :) he doesn't do that on purpose, he just gives too much information..
The flat tires didn't pump up, but OP found craigslist and got 4 good-looking tires of mobile homes on those metal rims for 100$ 7-14.5 size
This morning, however, he went to that resort with a 3ton floor jack, a bunch of cinder blocks, and 2x12 pieces to throw them on the ground under the blocks..
He jacked up the left side of the trailer with that single jack, placed 2x12 under the frame, 2 cinder blocks, and had both tires in the air. He looked underneath of the trailer and realized that all the left side of the frame now was standing just on that cinder block to the right of the wheels, as he was walking towards the front of the trailer to check what is it holding on to - the whole thing slid to the side and landed back on the wheels. At that same time, the owner and his lady were in the trailer, they must have thought it was an earthquake.. those never happened in MN before.
The good news is - no one got hurt, including the OP. Also since the mobile house shifted about 6-8 inches to the side now the OP could see the tires on the other side, which were covered before with a big deck.
The bad thing is - now the V-neck that was blocked up too is leaning to the side. They put a bunch more blocks in front of the trailer in case it will lean further to support the front but the OP isn't planning on doing any more work on it until the current owners leave for the winter back to the south, which will be this weekend.
I'm thinking it would make sense to have the mobile house mover come with the truck and attach the v-neck to the hitch so the trailer is connected to the truck and isn't moving anywhere, and only then swap the tires 1 by 1. The mobile house seems to have 1 of the tires on each side that are holding the air, but assuming the tires I have fit - it won't be an issue to swap them out.
The mover of the mobile house didn't offer any help in replacing the tires, he just said: 'You need to remove the skirt, remove the blocks and give me the address of your property, I'll take a wide load permit and will move it'
The OP got that mobile house for a few hundred bucks so the biggest expense would be to pay the movers to bring it for 20 miles to the property
Thank you all for your tips!!!!!