I would not do it. If you have the means to purchase a lift; do it. Its as easy as pie to stick a boat on a lift; actually easier than tieing it up with docklines all the time.
Make a mark on the dock, or the lift that you can align with a spot on the boat as a landmark. Line these two spots up each time you come into the lift, and hit the up button. Its that easy. If you are buying a 302 Baja, that is not a step bottom boat. This makes using a lift even easier.
The downsides are:
Bottom paint needs maintenance
You have to hire a diver or haul the boat at least every 2-3 weeks to clean it.
Bottom paint slows the boat down, makes it less efficient... uses more gas.
Leaving a boat in the water can/will cause gelcoat blisters.
Much higher risk of developing a leak when moored all the time.
I'd rather trailer than do the tasks you mentioned you are comfortable with. I'd either go for the lift, or sign up for a Boatel/Dry Stack storage contract in your shoes.