Hey Ryan,
Do yourself a favourand start jumping at a DZ that rents a good range of quality canopies. i regularly took 10% off my WL and by the time i did 150 jumps i was ready to by myself my beautifull 135 Sabre 2. By then i had progressed through a 149 Saffire 2, 169 Saffire 2, 175 Sabre etc.
Also, dont be lazy under the canopy. Make the most of the time by playing with the risers and toggles and seeing how the rig reacts in various conditions.
Also, plan your approach and landing spot s this will give you a good indication of your current level.
But, it will get expensive to keep buying new rigs every time you want to downsize. Renting is relatively cheap in the long term if your intention is just to acclimatise to new rigs and wingloadings. fly high... fly long.