2019 Yamaha MT 10
I'd do a K-tech rear shock and then, because your weight is so much more than the front is sprung for, do a set of springs only which should be about $125. It won't perfect but it'll give you a much improved over stock motorcycle until you can do cartridges. The K-Tech appear to be almost $400 cheaper then the Penske. Then next year you could do K-Tech fork piston kit which is about as good as cartridges and not have to buy springs.