Hot shot is a caustic product mixture of sodium and potassium hydroxide. I use a dual tip eductor and usually use a purple hydro tip. But that concentration is considered dangerously strong, I would feel more comfortable telling people to use a pink tip.
Where you may have been using 534 with say a orange tip, you could probably dial back to a yellow tip, then get the bulk of your alkalinity from the hot shot. Overall the additional cost of the booster is largely offset by the savings in the presoak.
I will warn you that hotshot is bad ju-ju. However, I feel high levels of alkalinity are going to get you the best car possible in a touch free, and there is minimal risk of use for a knowledgeable, active operator.