well the ender 5 is better than the ender 3 (but then so is being kicked in the groin by a professional rugby player) . But at the end of the day, it is still an ender made by creality. so don't expect quality build, components or any support from the company.
The new anet a8 PLUS - is probably a better buy.

Thats said - no it's not really suited for abs.
You really need an enclosed print volume for abs.
Temperature wise, printing should not be a problem. Abs normally runs at around 235-255 - so most decent hotends will print it without issue.
But it's not an abs friendly printer, out of the box.

Plus it's still using a bowden extruder - I don't think anyone knows why. There's no logical reason not to use a direct drive extruder - which is much better.
But then there's no logical reason not to use a direct drive extruder on an i3 either.

I have to admit I have never printed with hips - but as far as I know, there are no inherent problems and you don't need heated volume.

Now why do you think you have to make these enclosures out of the same material ?
pet-g or pla would probably be at least as good.
For outdoor and solvent resistance both are better than abs. From a 3 printed point of view, both are stronger and more durable.