You need a mast step link to perform the above procedures. Do you have one? Do you have hiking lines? Do you have a jib sail? Is it a turbo jib? If you resppond to these answers I bet a lot of sailors have procedures that work good.
I have tried to solo step my 14 without any stepping gear. With a lot of strength I could get the mast pegged, with the sidestays connected, but I didn't know how to safely leave the tramp to connect the bridle to the forestay. I let my friend make the connection. I thought for the future that if I parked the trailer so the bow was pointing downhill gravity would hold the mast in place while I went forward to make the bridle connection. It might be dangerous if the wind came up so I never tried it. If you are not strong enough to lift the mast upright then you will need to use a stepping link. If you can peg the mast yourself then the sidestays should be set loose so you will be able to connect the forestay to the bridle. After that you can tighten the sidestays if you have a hiking line to pull the mast toward you as you reconnect the sidestay(you would have to be in your harness connected to the hiking line since you need both hands to reconnect the stay). I don't have a hiking line, so it seems dangerous to disconnect the sidestay to readjust it. I hope someone else responds with some cheap solutions.