Due to bad timing I won't have anybody to help me with this other than my wife. In order to make it easier I would like to remove the doors before putting the frame in position, then put back either one door or both and make sure everything is square level and plumb at which point I am going to put a couple of screws in in order to keep the door in place till foaming complete shimming and all the other things are completed Are there any inconveniences for this method ?
Don't do that! You will never get the frame aligned properly in the opening if you take the doors out. If you can't handle the door yourself, get someone to help.
To elaborate a bit more. The doors in the frame provide 3-dimensional stability to the frame. Then you take them out the frame will distort in nearly all possible ways. You will never be able to get it straight or square enough so that the doors will work properly.
If you really can't get anyone but your wife to help, try building a supporting base to position the door at the height you need it. Then you can stand the door up there and with your wife's help, all that is needed is to push it back into the opening. If needed, add some blocking to prevent the door from falling into the opening.
It can be done with one helper, but you need to use suitable precautions.
You can remove the active door to help with transporting it on site, but often the inactive door is permanently fixed and not easily removable. If it is easily removable for some reason, then sure go for it.
Caulk the threshold, insert the frame, and then reinstall both active and inactive doors before going any further in the installation. Using temporary screws is fine if you don't have any help.
The biggest thing you can do wrong with a patio door is install it out of level/square. If you try installing it without the doors you risk doing it wrong.
The second biggest mistake is putting shims between the top of the door frame and the bottom of the header, so make sure you don't put shims there!
The reason is that as the header is loaded, it is typically designed to deflect up to L/240 total load deflection. If you put shims there, as the header deflects, your top door track will also deflect, and your door won't slide easily.