Is this A-Level subjects combination possible?

That's probably because people who do further maths A level are likely to be doing maths at uni... Hence find it easy. I hope you appreciate people of average mathematical ability will find the further modules challenging?

Goodluck with that easy A* considering you are doing 6 math modules a year.. including at least on "3" module, be it FP3,S3 or M3..Easy maybe, but 100% it requires work.

For most of a reasonable Maths ability (low A at A level) the Further Modules really will not be that challenging. They will not be a walk in the park as previously described by someone but they are not what i would describe as a challenge. In my opinion they are more like running, the physical act of which is not difficult at all but to do or understand but when you vary the terrain or length it can become more taxing. Hence practice in required same principal to the FM units. Often the principal or method is easy the way he question become challenging is to test synoptic knowledge as a subpart to the q. This is similar to varying the length or time of a run and only time investment and practice will get you to the point of being able.

It depends on the person.



Of course they will. But then again people of "average" ability don't usually take FM

Maths, Further Maths and Physics is 100% manageable. Add Chemistry and it becomes more difficult, but still possible. Add History and you are seriously spreading yourself too thin. Add Economics and it's extremely, extremely unlikely that you will have enough time for each subject in a way that ensures you get the top grade in them all.

Maybe I didn't specify - units such as FP1-2, M1-2, S1-2 both decision units shouldn't be a problem. By further units I meant going into M3, M4, M5, even FP3. They're not going to be an "easy A*", is what I mean

Fair enough but you do not have to do any off those units you can just do:
C1,C2,C3,C4,FP1,FP2,M1,M2,S1,S2,D1,D2 and cash in Further Maths without touching those other units you mentioned. If you were to do additional further maths well thats another question but Furthe Maths itself is perfectly accessible.