Mesh System

Hi guys, any advice you can give to us about mesh system. Di po talaga kami maalam sa ganito.

So basically plan namin lumipat ng bahay by January. Me and my wife are both work from home. 3 storey upside-down house.  yung bahay na lilipatan namin which means nasa top floor yung entrance and then pababa na downhill, 2nd floor yung mga bedrooms and parang ground floor is plano namin gawing office namin. May nakainstall na na PLDT don sa house na yun sa top floor so inadvise samin ng developer na gumamit daw ng mesh since I've said na di namin trip both na wifi yung connection ng PC namin (sobrang laki talaga deperensya kaysa LAN). So heres my question po

• Ilang mesh po ba dapat bilhin namin?
• Plano namin is kumuha sa PLDT since they offer installment plan sa mesh devices. Anong model po yung maganda at mabilis?
• True po ba na mabilis parin yung internet kahit sa mesh mismo iconnect yung LAN thru the PC and di sa modem?
• If may iba po kayong advice or option na isusuggest, please feel free po.