Nah, I already got the screenshots.If you do write something, why not write it with a bigger audience in mind.
This will be directed at you specifically. Outfitting is a huge topic and I'm not going to try to explain all that, I just want to show you what buttons to press and what to expect with your Hauler.
I'll put the screenies into thumbnails to make them take up less space. Click to enlarge.
Step one, select Outfitting:

Step 2: Select Hardpoints. Sell any weapon you find there


Step 3, select Core Internals:

For each module here you can select it, then Browse Shop:

There will be a list of available modules for that slot, in this case Power Plants. Choose the one you want to replace your 2E with (mine is already replaced here, so it's in red. Yours won't be):

Choose Exchange to buy the new module and sell the old one (no reason to keep those stock modules)

Do this for all the modules you want to replace. If you find that something you want isn't in the list, then it's not available at that station and you'll have to find it elsewhere.
Move on to Optional Internals and put in your fuel scoop, cargo bays, docking computers, etc in a similar fashion.
I'm sure you'll still have questions, but I hope this gets you started.