Thr mech you have have is not a hybrid - that is a plus. So just make sure you have good connection with your battery. Generally you screw in your atomizer first than your battery and then see if any adjustments are needed on your top cap - assuming yours is adjustable - so you get no battery rattle.
For batteries on a mech I always recommend 25R IMR which you have. Just make sure they are all wrapped properly - no tears - and the surface contacts clean. Keeping your mech clean is important. Now - I did at the beginning have a tendency to over drip. Be mindful. Some atomizers will spill the juice through your air slots if you do this and that juice is hot. Also take your atomizer off occasionally and clean everything out.
I primarily drip even at work. My builds on my mech tubes range from around .12 to ,22. Average build I would say is around .16 or so for my work vape. Note that mech tubes can get addictive. For your first mech I would highly recommend the Colonial. Beautiful switch, 510 connector, extremely light weight and comfortable. Now I use mine at least twice a week. But, I love a hybrid - this is not for beginners - because they simply hit harder. With a hybrids you have to be completely aware that the bottom pin on your atty sticks out enough not to short out your batteries. If you are not sure about this than stick with a 510 connector.
Why do I mention all this? You are getting a beacon. Trust me here. Unregulated mods are addictive. You will more than likely be getting another tube, a big old dual 18650 unregulated box and more. Once you go mech there is no looking back, lol.
The beacon takes three different battery sizes being telescopic. I will tell you this now - I own 18350 and 18500 mods. They restrict your builds and limit your battery life. Maybe you will use it as such but really a mech mod works best as an 18650 or 26650. My 18350 petit gros requires me to keep four batteries on me and I cannot build below .7 withiout being extremely mindful and then only with my efests - not my awr batteries.
Hope this helped. At this moment I'm vaping on my SMPL hybrid with an El Cabron atty (this is identical to a twisted or 13th heavens, btw). I'm thoroughly enjoying it. It is a great Sunday vape. So vape on, be calm, enjoy.