Well done, hope you have years of fun and happiness. Please post pics asap!
(sorry, can't help with the trailer, but I'm sure someone will be along soon who can).
I took a 24 yo on loan over 4 years ago that had no rider and was recovering from an injury - best thing I ever did!! He's going strong, ridden most days, in good health and certainly puts me through my paces!! He has taught me so much that I will forever be in his debt - I can merely repay him a small amount by looking after him to the best of my ability and making sure he wants for nothing for the rest of his days xx
The best little pony in the whole wide world came into our lives aged almost 21 and left us (for Rainbow Bridge) almost nine years later with nothing but wonderful memories. Have a fantastic time and take extra good care of the routine stuff. You'll be rewarded hundredfold.