60mg of oxandrolone(anavar) ed is a bodybuilding dosage. Anavar last I heard was fairly difficult to get, you may have something else that was packed/sold as var? This could result in different sides. If it's true oxandrolone, then as a self described combat athlete, you could get by with a lower dose 'imo' Maybe 30-50mg ed.
As for the pumps, consider using something for the bloat, blocking aor inhibiting estrogen...stay semi dry. This should reduce some sides.
You'll also be more tight in general when using so definately more stretching, longer warm ups, lots of foam rolling daily.