Start both, flip the 4 min when finished and also flip the 7 min which is now become a 5 min timer when flipped over. Done.
No man has a good enough memory to be a successful liar. Abraham Lincoln
2016 36FBTS Pinnacle
2016 F350, 6.7, 4x4, DRW, long bed
B & W Companion 5th wheel Hitch