can any one of you help

hello i need your help i have got k7 and the km the lens i got with them are 18-55 that came with the km and the new water proof 18-55 for the k7 i also have Pentax smc DA 40mm f/2.8 Limited the sigma 150-500mm f5-6.3 apo dg the 55-200mm and the Pentax smc DA 55-300mm f/4.0-5.8 ED Lens Pentax SMC 28-80mm FA J Zoom Lens BUT I HAVE NO Wide Angle Lens which Wide Angle Lens would you say is the best to use ????? please help as its my birthday soon lol

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