I have previously recommended running either GM3SEK's Tcalc or the old but still very useful Appcad programs to analyse what your system parameters should (could?) be. One word of caution. With AppCad, anyway, cascaded stage intercept numbers do not always stack up due to some cancellations. So I always leave a few dB uncertainty in the calculated dynamic range figure. Noise figures are generally pretty close.
The VLNA preamps are high gain (on70 and 23cm) and moderate on 13 and 9cm. Their output intercept is quite reasonable and may, in many cases, exceed the input intercept of many transverters and rigs such as the IC9700.
Use masthead gain with care. In most cases you do not need to have better than about 1dB noise figure in terrestrial systems, so you may be able to trade off some low noise performance agains loss in a prefilter. Do watch that some preamps have very poor input match and will therefore not terminate filters very well. This can lead to instability in the preamp and even excess loss in the misterminated filter.
73 de Sam, G4DDK