Yes, cheshire is all you need.

This the entry-level one I recommend, though there's a back order for it right now: https://www.amazon.com/SVBONY-Collimating-Collimation-Newtonian-Reflector/dp/B092ZW9X9M

The are other brands that make them: https://www.amazon.com/1-25Inch-Collimating-Newtonian-Reflector-Telescope/dp/B07GSNJSR7/

I recommend the first one because the smooth barrel lets you insert it as far into the focuser as you need in order to see the whole primary mirror, as well as better tune the apparent size of the secondary mirror to more easily center it. The second type stops a short distance into the focuser, which may not be ideal for all telescopes. That said, it will still do its job as long as the primary mirror is center-spotted.

As far as eyepieces go, my standard recommendations for that scope are these:

1. 32mm Plossl or 24mm 68 degree class eyepiece (if you're willing to spend the money!) for the widest possible true field of view in a 1.25" eyepiece. Useful for helping to locate objects.
2. 9mm or 10mm wide angle eyepiece for a general purpose 2mm exit pupil for deep sky viewing. Strikes a good balance between view brightness and magnification for most deep sky objects in any given telescope.
3. 5mm wide angle for conservative planetary observing. This gives 130x, which is just inside planetary magnification range, and good for when the atmosphere is not very stable
4. 3.2mm wide angle for higher power planetary observing. This gives 203x, for when the atmosphere is not very more cooperative

That will cover most of your needs. You can throw in a 15-18mm wide angle in between the 32 and the 9/10 for certain objects, but in reality it won't have much utility except for a few targets. I wouldn't prioritize this focal length. Avoid the 15mm or 20mm "gold lines" in your scope. They just don't like the F/5 focal ratio. Get the 15mm or 18mm Agena Star Guiders, or 18mm Celestron X-Cel LX intead.