1- Try finding March Rabbit of Nightmareland if you can I know is ~$10 each, but maybe someone is willing to trade, at least one could help a lot while you get the other.
2- Its true Death Anchor is better choice than Amon, but this card is also at ~$10 so if dont have them or cant buy them, I recomend Demon Eater so you can soul charge if needed and (plus you have at leat one Demon Bike of the Witching Hour in the soul then you can hit 20K every turn) then play Reiji, but remember that if you wanna use reiji yo need those 15 soul ASAP.
3- Try testing it w/ your friends so you really know if works or how would you like to play your deck.
4- Happy Cardfight :)