Officially hit 100K in cash
How I’ve done this:

1. Gather Iron tools immediately.
2. Tame a horse (optional when you don’t have a saddle)
3. Hunt enderman. Gain enough pearls to reach end portal
4. Stripmine. Mine all resources you encounter for XP. [enchant whatever you can]
5. Enter the End and use all the cobble you gained from stripmining to bridge to the end cities. [Have an enderchest before you do this]
6. Obtain Elytra (Fireworks buyable from store)
7. Put everything in enderchest and die.
8. You now are basically set to earn money

Recommendation

Obtain High Efficiency tools + Fortune. Redstone with fortune is absolutely a banger to increase your funds.

Put everything that is of high value in an enderchest. Always carry it with you. This will gaurantee you to milk every item for cash.

Have a spare elytra with firworks in an enderchest.

If you have money. USE it. No need to keep it in the bank. There a no taxes/bills you need to pay.

The best of all: Have an alliance with other users. People such as Huddy & Cheesebiscuit have supported the growth of Britain by a ton.

Conclusion
Basically what I said in a comment replying to GLK:
” I acquired the tools as fast as possible to start focussing on making money. After having money I gained access to anything.

Using the Market Lemon made is actually the best thing for progression. Find the right items to sell and to buy. It’ll make you bank.
Even in Minecraft it’s all about Money.”

Note: Don’t take this serious. Acting all serious about minecraft is pure comedy in my eyes