Good! --yes do that! (except as follows) It will work.
Note that the Iota only stays at the higher voltage until the batts get to 14.6, which can be a short time if they are starting at say 60% SOC, then it drops to 14.2. for 8 hours. IMO 14.2 is a bit low, especially when the batts want 14.8 for their Absorption Stage like most deep cycles do now. 14.4 is too low even.
The Iota has no stage changing remote either, just a remote ( IQ4) that enables it to do the three stages instead of just one 13.6 stage.
With the PD you could keep hitting the boost button to keep it at the higher voltage for Absorption.
I much prefer the adjustable voltage PowerMax, but you could choose a Randy type (bestconverters.com) 14.8 PD (not adjustable), as second best choice for the same price :) (Ok I am a PM fan. Others here are PD fans. Shoot me! :) )
I would say the Iota is third choice for the reasons given.
