choosing the right board

Hi,

since my testsetup with an old NUC ist working im looking at getting a routerboard, maybe banana pi.

I need at least 2x 2,5Gbit Ports, one for my NAS and one to my Office where I will install a small 2,5GBit Switch. 10GBit is a bit epensiv for me.

The SFP+ Ports on the Banana Pi BPI-R4 are only 10GBit and I cant use 2,5 Modules?

The R4 Pro would have everythinbg, but its a bit expensive.

The Ports labeled WAN on these Ports can also be used for LAN?

then the R4 Lite would be enough.

I need some space on the router for storing some files and maybe run Addguard Home on it.

Are there other vendorsfor router boards?

Im in Germany and the R4 Lite isnt listed anywhere.

Would a cheap switch work with these board? ( https://www.amazon.de/UGREEN-Unmanaged-Daten%C3%BCbertragung-Wandmontage-Metallgeh%C3%A4use/dp/B0DXVD4K1Z/ref=sr_1_13?dib=eyJ2IjoiMSJ9.a3F4baBEXMck23nLMJU0dnFdHyr_I61vp6HmrgSo4lwv2X8N228L_BnYhHhvHYObopFbSmw1JSXYUKWNceDeF2WiF-DbPgh4j_KAwk2vN_uYxAsig6NTS-pK89VL-mWh87XpFRYNR42k-I6uY4HXsmTMWMJvo20kB9sFLFWejg3EdXOSwwovjgsfZEBZpnjEstqiJviWXv2U0WHe3K5kg_KOiWD0qKyvXjH852NBYPw.lUNLCy8TR7GTZEF16oHFQs98mjEJaNFz_YmEy3LdZ6U&dib_tag=se&keywords=2+5+gbit+sfp&qid=1771997383&sr=8-13 )