I need to build a ramp for a shed. No heavy equipment will be moving on the ramp. Not much experience with power saws. Is there a way I can use concrete blocks or something?

BACKGROUND I have an alluminum sunroom approximately 300 sq ft that was built over an existing deck. It probably sits 8 or so feet off the ground. Its all windows and sliding glass doors with an aluminum pitched ceiling. Its essentially a 3 season room with little need for conditioning here in Maryland. In the summer we can open the windows and run the ceiling fan and at worse run the wall air conditioner thats installed when its really hot. In the cold of winter that wall unit is a heater. The cost to run the unit is high and surely does not give an impression that its an integrated part of the house. There are exterior grade doors that open to the sunroom so we keep them closed as to not have to 'manually' heat and cool the room to use it. Oh and the windows are double pane. GOAL I want to weatherize the room such that I can use it all year round. PLAN (1) I am going to expand the passage between the house and the room, removing the 2 doors that open to the sun room and replacing the headers and a larger opening. (2) although carpet is warmer I am replacing the exisiting carpet with 3/4 wood floor with its additional layer of floor board (3) I am going to cover the lower windows which are like 1' x 4' rectangles with foam board insulation in the window gap betweenthe glass and some large wood trim and or drywall. The outside of those small windows will be covered with vinyl siding. (4) lastly i will be extending ducks that run essentially right where the doors are to under the room and up on the far side of the room. they will need to be heavily insulated under the deck. (5) I would remove the wall unit because frankly its unseemly and loud. Thats as far as my plan gets. HELP My major concern is increasing the R factor of the ceiling and whether or not to cover the two large triangle windows above the main course of windows. I know this seems to defeat the purpose of the sunroom but there is still plenty of glass to go around and if we are closing if off for 4 months whats the point? I would rather constrain the view and use it 12 months than the current situation. For the ceiling I have seen essentially bead board or planks affixed to the ceiling but I presume that would not provide enough R factor. There is probably a good 4" I could "drop" the ceiling, before it meets the window sill, with perhaps insulation, a 1x4 and drywall on top but how to hang that on an aluminum ceiling that you would surely not want to pierce. Liquid nails?? I just wonder if there is a kit out there for such a project.