Monetary Systems for Anethemalon Campaign

So here is the monetary system I plan to use for my upcoming Anethemalon campaign. (The Dying Empires was my original campaign cobbled together from my earliest adventures, I was 10 - 15 years old at the time, and is related to Anethemalon).
This campaign is supposed to contain the "masterpiece" super adventure I wanted to create just before I stopped playing RPG's in the early ninties. Its the main reason I began looking at RPGs again and how I discovered the OSR. My plan is to use Castles & Crusades because I want an AD&D feel and access to resources, but can really do without the cumbersomeness. C&C plays with the fluidness of Moldvay/Cook/Marsh D&D, the version of D&D my group and I played the most.

Dying Empires & Anethemalon Campaigns

5 gp = 1 pp 

1 gp = 2 ep

1 gp = 20 sp

1 gp = 200 cp

or 

10 ep = 1 pp

2 ep = 1 gp

1 ep = 10 sp

1 ep = 100 cp

pp = Sovereign (s)

gp = Crown (c)

ep = Royal (r)

sp = Noble (n)

cp = Guilder (g)

Common currency is the Royal.

C&C Conversion with gp being common and equal and 1 Royal being half a gold piece

2 pp = 1 C&C pp or 10 C&C gp

1 gp = 1 C&C gp

2 ep =  1 C&C gp

20 sp  = 10 C&C sp or 1 C&C gp (2 sp = 1 C&C sp)

200cp = 100 C&C cp or 1 C&C gp (2cp = 1 C&C cp)

This is essentially the same rate of conversion as AD&D but the pieces are named by value rather than material and the common piece here is the Royal or ep. I'll probably make up an equipment list with conversions to Royals based on the C&C lists with some other sources added on to present to my players.