Here is some reading material that may help you out
The lifestyle bundle is a great choice and the placement decision is ultimately yours.
PERSONALLY
I would start thinking about my use cases and what I may want to get on the future.
If we said that these four were all you were going to get ever, I would consider something like:
The NExT implant in position 0 of one hand
xM1 in position 0 of the other hand
The Spark2 is tricky, if you weren’t looking at getting an Apex implant when it is released, I would put this somewhere easily readable by a phone, maybe position 2- 5( not position 1 just to keep it separated from the xM1 or NExT.
Alternatively ( assuming I didn’t want to also use it for access systems) on the forearm or outer thigh.
The magnet (I don’t have one, but looking at other people’s choices, and because the xG3 in this bundle is an xG3 V1 which is more sensing than lifting, I would be looking at somewhere with higher concentrations of nerve bundles like the fingertip (which could be quite intimidating for a “first” implant)
I will let others with xG3 V1 give you alternative location suggestions.
So the above is not what you should do, just something you could do.
Also if you were looking at walletmor, I would suggest on your preferred hand.
I have custom payment in position 4.5, if I was to do it again, I would go position 4 Or 5. (other positions are available, I can only give you my experience)
If you do have further question, just ask.
Haha, as I was typing, looks like @yeka also dropped in the same location guide…