Modification of MPL

Hello,
i want to implement the MPL on an 8 bit MCU for the IMU3000 and the ADXL345. The resources are limited (32k flash, 4k RAM). I wan't to remove all compass / mag references, pressure sensor related stuff and replace long long types with double? Furthermore, there are some huge automatic variables / data array's (partially more than 256 bytes), i will use one global buffer. Is it possible or not (e.g. due to nested calls)?

Please can anyone tell me if the things described above are the right way or is it impossible at all to adapt the MPL to an 8 bit machine.

I have seen in the forum that many developers have the same problem. So it may be very useful to create an "light" version of MPL which contain the base functionality (sensor fusion) without the sophisticated overhead.

Thanks!
Bernd