How to select a DC-DC converter topology?
The simple rule of thumb I use is that when you get beyond about 6:1 it's time to compare other options.  You're at 14:1, so well beyond that. 

You could always use multiple stages or push that duty cycle down further by heroic measures to get higher ratios, but the approach does tend to run out of gas. 

You might want to have a look at Analog Devices application note AN-1126 on using Sepic multiplied boost converters. Your application appears to be right about in the wheelhouse for that approach- which maintains the single-switch simplicity of the boost converter, and does not require custom magnetics.