So it is all installed and works great. Took my 4Runner out on snowy trails and bumped along without any stability issues. Currently have the iPad plugged into a 2.1A charger and it holds a charge perfectly. As for the charging cord, I wrapped it around the arm a number of times so it no longer gets tangled.
My girlfriend often rides with me and it is our daily driver and she is not bothered by the mount. When you do not have a tablet installed there are enough articulation points in the arm to fold it away from the passenger side. Additionally you can unscrew the arm from the mounting points with ease. As far as mounting, I used sheet metal screws and they went in easily to the plastic by the 4 wheel shifter but took a little more force to properly install through the carpet and metal (for the lower mounting point). I have yet to put nuts on the back and I am thinking that I will also put some marine sealant on as well to prevent rust.
For those of you who are interested, here is the part list along with pics of the assembly and installation.
UNPKD. RAM 2 7/16" DIA.BASE WITH 1" BALL, Part ID: RAM-B-202U, Qty: 2
RAM PLASTIC DBL SOCKET ARM B BALL A LNG, Part ID: RAP-B-201U-A, Qty: 3
RAM BASE WITH 1/4" NPT THREADED HOLE, Part ID: RAM-B-218-1U, Qty: 1
UNPKG RAM DBL SOCKET ARM B BALL C LENGTH, Part ID: RAM-B-201U-C, Qty: 1
UNPKD RAM RAIL BASE W/BALL & ZINC U-BOLT, Part ID: RAM-B-231ZU, Qty: 1
X-GRIP UNIVERSAL TABLET HLDER W 1" BALL, Part ID: RAM-HOL-UN8BU, Qty: 1
1/4" X 9" LONG PIPE NIPPLE ALUMINIUM, Part ID: RAM-PA5409, Qty: 1