WiFi adapter, router, switch, 3-4G modem in one?

Question

WiFi

Good day. Interested in an all-in-one solution, or WiFi + Router.
The task is to connect to the WiFi Internet on vacation (or 3-4G), but at the same time connect several laptops to one local network through the router with a WIRE (namely, wire) in order to save the network that I have now at home.
additionally important points:
1. 3-4G modem via USB or a built-in solution, if it is sane
2. Firewall with the ability to block DNS queries, Draytek has such a thing, the difference from blocking URLs is that unfound domains are immediately blocked without poisoning unnecessary requests with no response.
3. the ability to connect external antennas.
Interested in a professional solution, medium and expensive segment. and also all ideas and considerations how to live not to grieve I will listen, maybe there is a more rational solution.
PS. I found Ubiquti on Yandex, but I could not figure out the abundance of products and did not understand what specifically it only distributes, and what exactly is connected via WiFi / 3G.

Answer 1

mikrotik. Right now I am connected to the network via Mikrotik, and I am in another country regarding work. A tunnel was thrown to work, there are two networks on the wifi adapter - one to the working network, the second to the provider's network ....

Answer 2

choose
routerboard.com/product/123
routerboard.com/product/132
routerboard.com/RB951Ui-2HnD
routerboard.com/RB951G-2HnD
routerboard.com/RB951Ui-2nD lightest and cheapest
work with 8v without heavy crown load last half an hour
weight 150-230g
sellers all here routerboard.com/distributors