how long is the run time if I go electric and would I run a normal 12 volt DC motor and then what battery should I use Dc Electric with batteries not something that I know all that much about
How far you can go depends on how big your 'tank' is, in battery terms it's Ah Capacitance.
The bigger and more efficient you start with, the farther it will take you before it needs a charge.
12V is way too wimpy, think your cars 12V LA battery and starter motor, you have maybe 8 minutes of continuous cranking before the battery is dead.
36 and 48V are pretty common voltages that controllers and BLDC (Brusless DC) motors like.
I like Lithium Ion based battery packs, they are still expensive but they are a really big 'tank' of power for the size.
I used these custom made 36V 1000 Whrs battery packs for my 3 shifting e-trike builds.
102 4.2V 2C NCM Cells packed 12 parallel rows of 10 series cells. 40A continuous.
Batteries are even better for the same price since then.
The trick is to pick a motor and controller that will take a range and fit where you want to put to it to attach it to the drive train and how you tie it in.
After that with enough room you can pack in a bunch of car batteries like electric golf carts use in various Serial and Parallel configurations to any number of compact configurations with better cells.
By 'cells' I mean the small voltage and storage a given thing can hold.
A 'D' flashlight battery size is a good example.
It is 1.5V like every other common flashlight battery and when you put a few in something to make it go you are creating a Pack of cells.
A D may only have the voltage and current limits as a AAA battery, it just holds a lot more of it because of the size so it lasts longer.
LI cells are just a bit bigger than AA or about the size of a C but carry ~3.7V and can hold way more capacitance than a dry cell.
Pack a bunch together and your set.