#1. The only reason you'd ever get away with this is because you haven't given her a reason to investigate or look around, the second you do it's very likely you will be caught, between the overestimating of your own capabilities and the underestimating of hers, you will get caught if suspicion rises.
#2. Think of cheating like smoking a joint in your vehicle... Aside from the fact that this is a stupid ****ing thing to do, the idea is that if the police come even remotely close to your vehicle, they are going to smell the weed, thus, when you smoke, you want to do it in a place where you aren't out of place, stand out or where you can quickly exit your vehicle, lock the doors and have plausible deniability. The cheating must be done through a pre-existing vehicle on your schedule, no changes to accommodate it... If you must, create that vehicle before the cheating ever begins and establish the routine you will channel it through without cheating at first, again, plausible deniability, no active accommodation ever. Manage the thirst, if it's not happening this week, wait.
3. Think of cheating like stealing from a bank, you can plan the heist, but the one thing you absolutely cannot plan for is the intervention of a stranger... Even if a stranger does intervene, you can't just scare them off mid cheat because, if your in the right place, they have just as much of a right to be there as you do, so in order to really enjoy the experience, your going to need to go somewhere with an expectation of privacy OR your going to need to change your visible identity before and back after. Expectation of Privacy or Identity Change. Again, establish the identity before you ever begin cheating.
4. Consider the motivations of who you are cheating with, is she financially insecure? Asking if your getting divorced? Know that your married? The role of your wife is just that, a role, anybody could be in it, they all know it, so if they have something to gain from sabotaging your marriage, you have to understand that reality is just a justification away from manifesting: "If I told his wife, it would be for the best because then he wouldn't be cheating on her anymore, she can move on and I can move in" and this is just normal people ****, you start getting into the narcissism, cluster b, BPD, etc, who the **** knows what's gonna happen bro. Based on your previous posts, you have struggled with setting boundaries and limitations with your wife, this same issue would also likely manifest in the affair partner, this is by far the strongest point of failure for you and in general is probably the point of failure of all cheating... The one area where you can leverage this into your favor is if, in the affair partner cheating with you, a betrayal would be felt by your wife; this feeling of betrayal would hopefully give the AP some pause, also very high risk to initiate though incase your advance is not received and the AP tells wifey you made an advance.
5. The Paper Trail must be managed properly and this depends on your technical prowess alongside your wife's but generally speaking you can't just hide **** like this forever, so either alter the language the paper trail uses or ensure there isn't a paper trail which these days is not easy. Notifications off.
Basics of not getting caught, good luck