Safarir

Hi, Me and 4 of my firends will be attempting to climb rainier in mid July via the DC route and this will all be our first mountaineering experience. We have extensive backpacking experience and some winter camping experience up here in Ontario. We will also be taking 3 days of mountaineering course/crevasse rescue before our summit attempt. I am finalizing my gear selection and was hoping to save a couple of pounds on the tent. Our current plan is to rent real 4 seasons tents but a part of me just want to believe my Hubba Hubba tent would be sufficient. I am looking for expert opinion on the subject. Is it too risky ? What kind of wind can I expect up there ? Thank You