I want to design FIR and IIR Filters...

sorry I didn't mention the specifications

for FIR

low-pass filter, order 55, with a cutoff at 10 hz, 500 samples/second

IIR

order 1, attenuation at 22 db

the thing is that i don't know which implementation is the best for use in order to save resources

until now I only had thinking in use flip-flops, multipliers and adders, but I think that this needs a lot of LEs

also I haven't decided the number of bits for the coefficients

I have a cyclone II ep2c8q208c7 (8300 LEs, 18 18x18-bit multipliers) and I have already use around 15% of the LEs

there is another way for implement the filter?

I'm kind of lost, thanks for the advices