Performance? 50,000 Records? 15MB Internet

I will have 4 Tables,

Table 1: 5000 Records Linked to Table 2
Table 2: 10,000 Records Linked to Table 3
Table 3: 30,000 Records Linked (from Table 2)
Table 4: 5000 Records Linked to Table 2

Internet Speed: 15MB to 20MB

5 In House Users, Airtable Native Windows App

Am I headed for a disaster?
Can Airtable handle this?
Does Airtable Load Records that have been Filtered out of View?
What measures can I take to remain performant at these record counts?

Thanks so much!!!

Ray