Hi All- looking for some guidance on restoring a Charles Limbert Arts and Craft chair from roughly 1906 (complete with burn seal).  I found it sitting outside at an antique shop and it needs some care but is in overall good shape. I’ve restored a couple other furniture pieces before, but none that are so valuable and I want to make sure I do it right and give the chair proper care. 
I went to Rockler and with some guidance from a gentleman there have outlaid the below steps:
1. strip the chair
2. clean with mineral spirits
3. use Aqua clear seal on the underside of the rocker rails where its really worn
4. sand
5. General Finishes water based prestain conditioner
*pause to evaluate chair- determine if an Arm-n-Seal application and natural wax will be enough or if a stain is needed.
Question #1- will any level of sanding in step 4 take the existing stain away and prevent a nice finished look of the originally stained chair.
Question #2- is step #5 the right approach?  Since the chair was outside and likely exposed to unknown elements, it may need a deeper conditioning but I’m really not sure. Prestain conditioner if i’m staining, but if I don’t decide to stain should I use something else to condition? 
Question #3- is there a recommendation of a different approach or steps to take?  I’m trying to keep it as authentic as possible while restoring its natural beauty. 

Thanks all for your advice!

Renae