OK, with more info, it appears what was supplied at the factory is lifting the door as far as the shocks will go. Just that height is not enough. I'm 72" tall without shoes on, so I would clunk into it as well. I can feel the headache coming on now...
Not knowing what your door brackets etc. are like, it is hard to help tell you to how to change what you have.
It sounds like you are on the right track by increasing the stroke length in the same mounting locations from the door hinge. With longer shocks with the correct strength, you gain more stroke but do not add more stress on the mounting brackets. Moving the existing shock mounting points closer to the hinge point will gain more door movement, but it will increase the stress on the bracket as the lever effect is now larger.
If, by chance, the old shock can release the ball socket on the shock from the mounting bracket, and the ball socket is the same size as the new shock, maybe you can remove the old shock and put the new shock on the old brackets. You can release the shock from the ball end on the mounting bracket for some of those gas shocks. And some you can't, and you are stuck changing the whole bracket. You may get lucky and can change just the shock and use the old brackets.
Posting pics, there is a way to do this using the forum file server; I'm unsure how. Someone else can chime in on that. I link my pics to the forum from my Flickr photo hosting site. If you have an online photo site system that allows 3rd party linking, and the file ends in jpeg, you can use the postage stamp icon. It will request a picture URL, fill that in, and the picture will view here. Make sure to fill in a max of 640 pixels wide, not to create scrolling of the screen. You can leave the height blank; the system will resize it to 640 wide by whatever proportion fits the height. There used to be a rule not to post pics more than 640 wide; I think it is still in effect as I see the moderators resizing pics still.
Hope this helps
John
2005 Ford F350 Super Duty, 4x4; 6.8L V10 with 4.10 RA, 21,000 GCWR, 11,000 GVWR, upgraded 2 1/2" Towbeast Receiver. Hitched with a 1,700# Reese HP WD, HP Dual Cam to a 2004 Sunline Solaris T310R travel trailer.