20+ years of "Building 904/727 for drag racing use"

Hello Chris......I did want to pick your brain in regards to low/reverse band applied in 1st gear in a 727 transmission. I have two different 727 transmissions with reserve manual valve bodies and one have the low/reverse bands applied in 1st gear and the other does not. I am in the process of building a street strip 68 Dart with a 470 that should be around 600 hp and 600 tq. To be honest, I kind of like how the 727 without the low/band applied in 1st gear drives as there is no engine braking below 20 mph and I have made the mistake of accidentally down shifting the transmission with low/reverse band applied in 1st gear coming up to traffic lights on the street, which wasn't fun as it locked up the rear wheels. I have read the issues associated with not having the low/reverse band applied in 1st which is putting more strain on the sprag which can lead to failure. (At least that is what I have read). My question to you is, is there a way to safely have the low/reverse band not applied in 1st gear as to not have engine braking in 1st under 20 ish mph, or do I just need to deal with this type of operation so I can be safe with launching the car in 1st when I do go to the track. Thank you in advance for your insight!
Nothing against Chris, but John Cope has a new feature in his valve bodies called a Tesla valve. It gives you low band apply, but prevents that sudden lockup of the rear wheels caused by the band coming on when you down shift to 1st gear. AFAIK an industry first for the torqueflite.