Replacing the core / border in a small ISP - is it worth it?

Question

Computer networks

Good day!
I'm thinking about buying a piece of iron in the core of a small ISP.
The goal is the reserve of the current border + core switch.
Tasks - receiving L2-L3 uplinks from aggregators and servers (total traffic up to 10 Gbps), 1-2 BGP sessions (default + a couple of dozen prefixes); 2 uplinks to the Internet with an average load of 800 Mbps; ospf mstp.
Budget - up to 75 tr.
Now I'm considering a variant on the Cisco WS-7406 (not the E-series).
- Chassis Cisco Catalyst WS-4506
- EMS - Supervisor Engine IV WS-X4515
- Ports -WS X4448-GB-RJ45 48 ports 10/100/1000Mb
- PSU x2
- fan unit (if needed)
- card for optical interfaces (2- 4 ports) (did not find models yet)
Of the advantages of this model - the price, the availability of spare parts, modularity.
Of the minuses - noise, high power consumption, there is no possibility of further scaling (too old).
Interested - how effectively will this configuration cope with such tasks or is it worth considering something else? Are there any pitfalls (after all, old equipment).

Answer 1

Damn, in the context of the budget of 75k, this is generally some kind of tin, save money, buying such junk is also tin.

Answer 2

A stack of two Dell PowerConnect 6224 switches with stacking modules and SFP+ modules. Hardly meet $1,000.
Accept BGP on the route server, on a virtual machine with next-hop IP spoofing.
Well, still lay a budget for customization :)