Congrats on your purchases! I have the both the Handy and Edge 2 for a few years now and am using both a lot. Although the Edge 2 a lot less after getting the Handy - the device and experience is just so powerul! All, of course, thanks to all the wonderful creators in the community. And I really can’t be bothered to stroke myself lol. The Edge2 can sometimes be all too much, especially when diving into, for example, a Shibby Says experience. Yet if you feel like you have the stamina to hold on, then when paired together, Handy and Edge 2 -it’s an even more extremely powerful combination reserved for those special multi hour long gooning sessions 
Didn’t have the chance to try out the Tenga sleeves you mentioned, as I settled on the Tenga Spinner series and they are amazing. Tetra - the lightest one. Hexa - a bit more intense. And Brick - total overkill, good only if you cummed already that day and/or are super non-sensitive.
Yet it can be a pain to attach them so that they hold permanently and well. But once you do - it’s a total breeze. The Handy TrueGrip Pro velcro strap is a must in this case.
Sometimes when going on for a week or so without the Handy, even the Spinners can be too much, so I recommend you look into a lighter sleeve. In this case I sometimes even like to come back to the OG Handy TrueGrip sleeve, and I also got a few onaholes that work wonders, yet when looking into one, have in mind the weight limits of the handy.
Do also look into a hands-free solution how to mount your handy. This will honestly change everything.
I think this is the topic for some ideas: DIY Handy Hands Free ideas? - #18 by Thanny
What I did is I bought a bicycle cup holder, with protrusions for the handy motor mechanism to be able to slide, and attached it with a few straps to a super clamp magic arm. 15$ and it does everything I need it to.
If I were you, I think I’d start by just using either the handy or edge 2 separately. Edge 2 for those controlled edging sessions, and the Handy… Well it can surely take you by surprise.
Connect your handy to the web interface. Just follow the user guide and on screen instructions. Play around with manual mode first. Then get Funscript player, pair with Handy and dive into Eroscripts.
I start my sessions with slow scripts: use the bottom bar of Funscript player for stroking intensity reference. From green to red is the most intense. Place your videos in that order and you’re sure to have a blast!