Hi! First timer here.I will be flying out of CLT on United ExpressJet emb 145.I plan only to pack carry on bag but now not sure if it will fit in that particular plane's overhead storage.I have a 21 inch wheeled carryon. How is that handled when the baggage is within carry on limits?I don't want to check any baggage that could get lost! I will be arriving at CLE and departing approx 25 minutes later on United/Chautauqa/ExpressJet emb 145. Will this short time be enough for getting from gate to gate at Cleveland?