Spot on na yung sinabi ni oj88

Regarding Tenda medyo overkill na yan kung 20 meters lang pala

Pili ka na lang sa choices dito

villman.com/Category/Access-Points

or

pcx.com.ph/peripherals/networking/network-accessories.html

Sa cheapest alternative baka nga ito pwede na for that pero it still your choice
Edimax EW-7438RPn