You could try and download a random ship, import the ship in creative, use the "modify entire ship" button (lower left in build menu), replace material with iron and titanium (in that order), then delete all the non iron and titanium parts left (shield generators etc.). You can also rescale the ship in that menu to make it bigger.
You now have a giant iron/titanium ship!

I will warn you that since you don't have a shield, you will need to repair alot which cost both money and materials. But some thick armour + integrity field will help reduce the amount of lost blocks.
You could try my Hammerback ship, since it already has 0.5 thick armour all around and intgrity field generators, just add some inertia dampernes since it doesn't have those (gonna upgrade the design at some point).

Good luck!

I was running around with a titanium beast with around 40k hp with so many intergrity fields that my biggest pay to repair it was like 5k titanium but it still only uses like 120k titanium to make to begin with so yeah.

Not worth it. Just make a mad dash for naonite and then build. What you say about the workshop tags is true and I believe they've acknowledged it's not working that well.

As a footnote, "so many integrity fields" makes it sound like you're using too many. You only need all your parts highlighted blue when you have the generator selected, and maybe a bit of redundancy in case one gets destroyed. More IFG blocks or volume doesn't make your ship tougher or anything.