I fully understand why one would want a regulated REO.
I vape a lot of non REO devices as well and they are all regulated. I often change them a bit through out the day. Most certainly depending on juice and having the exact wattage I set throughout the batter life is nearly a necessity for me now days.
I also understand why the REO is not regulated. Its bullet proof, last forever kinda thing.
But how many bullet proof devices does one need ?? I have a desk of REOs that will last for ever.
What I would love to add to the desk is a half dozen regulated bottom fed devices that will suit my needs fully knowing that I will have to toss them in the trash one day. I have a house full of electronic devices that I love .... None of them will last very long.
Regulating with your coil build is barbaric and its not really "regulating" anything its just setting your wattage to a particular voltage which is constantly changing each hit ..... the point of regulation .... is not adjustment .....its regulating the power to be a constant output until the batter can no longer support that output. The adjustable part is just a sweet bonus and don't get me wrong I want adjustment and regulation
I build my coils to suite me in the 4.0 volt range but with certain juice flavors I have to pulse the button a bit on a fresh batt. I usually am swapping out batts by 3.8 because the vape is too weak. I can get buy if I'm not near a fresh batt lower but dam I'd much rather have a chip in there performing magic! Even if the chip only lasts a year.
But to the OP ....... The kicked REO is just not a viable option IMO, sorry it does not work well its very finicky and just more frustration than its worth. Its OK to play around with but not ready for prime time as they say.
You would want the Kick 2 (hint) I have two like new that I never use (me and 20K other people)

You would want a solid body REO, not the super light (SL) aka cheese grater

You would need the contact point of the kick to meet bare aluminum to make electrical contact.
So either a tumbled raw aluminum (TRA) REO or do a little sanding on the inside of a colored REO body.
Most importantly and the problem I never solved is you need a way to keep the darn kick from moving around. The kick was designed for tube mods but even with the tube the fitment was finicky and things did not always work right. Compounding the problem is the REO has a top firing pin where as most tubes have bottom firing pins. So in the tube mod no moving parts were contacting the kick but with the REO the firing pin makes contact with the kick each time you vape and tends to move the kick slightly each hit. Bottom line not an elegant solution if even a viable solution. Sorry.